Studying the multi-dispersive characteristics of the radio channel — A story of collaboration and friendship with Pertti Vainikainen

This paper summarizes the research work on the study and deterministic modelling of multi-dispersive urban radio propagation, we had the great privilege to carry out in collaboration with Professor Pertti Vainikainen. The story of the collaboration is depicted in the introduction, while the major achievements of the work are shortly described in the following sections.